The Calcutta High Court has sought a report from West Bengal Home Secretary on the massive police crackdown on BJP workers and its leaders during the party's 'Nabanna march' on Tuesday.<br />''<br />''Hearing the BJP's plea against senior state government officials for proactive police action against saffron party workers, the Calcutta HC  asked Home Secretary to submit the report by 19th September on the matter.<br />''<br />''<br />